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rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al 1.5a low dropout voltage regulator SPX29150/51/52/53 description features adjustable output down to 1.25v 1% output accuracy output current of 1.5a low dropout voltage of 390mv @ 1.5a extremely tight load and line regulation extremely fast transient response reverse-battery protection zero current shutdown (5 pin version) error flag signal output for out of regulation state (5 pin version) standard to-220 and to-263 packages the SPX29150/51/52/53 are 1.5a, highly accurate voltage regulators with a low dropout voltage of 390mv (typical) @ 1.5a. these regulators are specifcally designed for low volt - age applications that require a low dropout voltage and a fast transient response. they are fully fault protected against over-current, reverse battery, and positive and negative voltage transients. on-chip trimming adjusts the reference voltage to 1% initial accuracy. other features in the 5 pin versions include enable and error flag. the SPX29150/51/52/53 is offered in 3-pin and 5-pin to-220 & to-263 packages. for a 3a version, refer to the spx29300 data sheet. applications powering vga and sound cards lcd monitors usb power supplies powerpc? supplies smps post regulators high-effciency green computer systems high-effciency linear power supplies portable instrumentation constant current regulators adjustable power supplies battery chargers figure 1. fixed output linear regulator figure 2. adjustable output linear regulator typical application circuit s spx29152 v out v in gnd adj 1 2 3 4 5 r1 r2 6. 8 f + + 10 f SPX29150 v out v in 6. 8 f + + 10 f 1 2 3
2 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation absolute maximum ratings storage temperature range ........................-65c to +150c operating junction temperature range...... -40c to +125c input voltage (note 7) ...................................................... 6v electrical characteristics at v in =v out + 1v and i out = 10ma, c in = 6.8f, c out = 10f, t a = 25c, unless otherwise specifed. the boldface applies over the junction temperature range. adjustable versions are set to 5.0v. parameter conditions typ SPX29150/51 min max units 1.8v version output v oltage i out = 10ma 10ma i out 1.5a, 2.5v v in 16v .8 1.8 1.782 1.764 .88 1.836 v 2.5v version output v oltage i out = 10ma 10ma i i i out 1.5a, 3.5vv 1.5a, 3.5vv v v in 16v 6v 2.5 2.5 2.475 2.450 2.525 2.550 v 3.3v version output v oltage i out = 10ma 10ma i i i out 1.5a, 4.3vv 1.5a, 4.3vv v v in 16v 6v 3.3 3.3 3.267 3.234 3.333 3.366 v 5.0v version output v oltage i out = 10ma 10ma i i i out 1.5a, 6.0vv 1.5a, 6.0vv v v in 16v 6v 5.0 5.0 4.950 4.900 5.050 5.100 v all voltage options SPX29150/51/52/53 line regulation i o = 10ma, (v out + 1v) v v v in 16v 6v 0. 0.5 % load regulation v in = v out + 1v, 10ma i out i full - load 0.2 % ?v output v oltage temperature coeffcient 13 100 ppm/c ?t dropout voltage (note 1) (except 1.8v version) i o = 100ma 70 200 mv i o = 750ma 230 i o = .5a 390 600 ground current (note 3) i o = 750ma, v in = v out , +1v i o = .5a 2 45 25 ma i gnddo ground pin cur - rent at dropout v in = 0.1v less than specifed v out i out = 10ma 0.9 ma current limit v out = 0.0v (note 2) 2.2 1.7 a output noise voltage (10hz to 100khz) i l = 100ma c l = 0f c l = 33f 400 260 v rms reference voltage adjustable version only 1.240 .228 1.215 .252 1.265 v reference voltage adjustable version only (note 8) .203 1.277 adjust pin bias current 40 80 120 na reference voltage tem - perature coeffcient (note 4) 3 ppm/c adjust pin bias current temperature coeffcient 0. na/c flag output (error comparator) spx29151/53 output leakage current v oh =6v 0. .00 2.00 ua output low v oltage device set for 5v, v in =4.5v, i ol =250a 200 300 400 mv
3 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al notes: note 1: dropout voltage is defned as the input to output differential when the output voltage drops to 99% of its nominal value. note 2: v in = v out (nominal) +1v. for example, use v in = 4.3v for a 3.3v regulator. employ pulse-testing procedures to minimize temperature rise. note 3: ground pin current is the regulator quiescent current. the total current drawn from the source is the sum of the load current to the ground current. note 4: thermal regulation is defned as the change in the output voltage at a time t after a change in power dissipation is applied, excluding load or line regulation effects. note 5: comparator threshold is expressed in terms of a voltage differential at the adjust terminal below the nominal reference voltage measured 6v input. to express these thresholds in terms of output voltage change, multiply the error amplifer gain = v out /v ref = (r1 + r2)/r2. for example, at a programmable output voltage of 5v, the error output is guaranteed to go low when the output drops by 95mvx 5v/ 1.240v = 38mv. thresholds remain constant as a percent of v out as v out is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed. note 6: v en 0.8v and v in 16v, v out = 0. note 7: maximum positive supply voltage of 20v must be of limited duration (<100m_) < 1%. the maximum continuous supply voltage is 16v. note 8: v ref v out (v in -1), 2.5vv in 16v, 10ma i l i fl , t j < t jmax . reference thermal shutdown en in out adj gnd o.v i limit 28v r1* r2* 1.180v 1.240v + + - - flag block diagram electrical characteristics cont'd parameter conditions typ SPX29150/51 min max units upper threshold v oltage device set for 5v (note 5) 60 40 25 mv lower threshold v oltage device set for 5v (note 5) 75 95 140 mv hysteresis device set for 5v (note 5) 5 mv enable input spx29151/52 input logic voltage low (off) high (on) v in < 10v 2.4v 0.8 v enable input pin input current v en =6v 00 600 750 a v en =0.8v 1 2 a regulator output cur - rent in shutdown (note 6) 0 500 a thermal resistance to-220 junction to case, at tab to-220 junction to ambient to-263 junction to case, at tab to-263 junction to ambient 3 30 3 32 c/w
4 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation typical performance characteristics figure 3. line regulation figure 4. load regulation figure 5. ground current vs load current figure 6. ground current vs input voltage figure 7. ground current vs load current in dropout figure 8. dropout voltage vs load current 3.280 3.285 3.290 3.295 3.300 3.305 3.310 3.315 3.320 4 6 8 10 12 14 16 vin (v ) 3.3v device il = 10m a cl = 10uf vout (v ) 3.280 3.285 3.290 3.295 3.300 3.305 3.30 0 0.25 0.5 0.75 .25 .5 il (a) vin = 4.3v cl = 0f 3.3v device vout (v ) 0.0 0.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 0 0.25 0.5 0.75 .25 .5 il (a) 3.3v device vin = 4.3v cl = 0uf ignd (ma) 80 200 220 240 260 280 300 4 6 8 0 2 4 1 6 vin (v) 3.3v device il = 10ma cl = 0uf ignd (ua) 0 0 20 30 40 50 60 70 80 90 00 0 0.25 0.5 0.75 .25 .5 il (a) 3.3v device vin = 3.2v cl = 0uf ignd (ma) 0 100 200 300 400 500 600 0 0.25 0.5 0.75 1 1.25 1.5 il (a ) 3.3v device cl = 10uf vdropout (mv)
5 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al figure 9. ground current vs temperature figure 10. output voltage vs temperature at at i load =10ma i load =10ma figure 11. ground current vs temperature at i load =500ma figure 13. ground current vs temperature at i load =.5a typical performance characteristics 80 90 200 20 220 230 240 250 260 270 280 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device vin = 4.3v il = 10m a cl = 0uf ignd (ua) 5.00 5.20 5.40 5.60 5.80 6.00 6.20 6.40 6.60 6.80 7.00 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device vin = 4.3v il = 500m a cl = 0uf ignd (ma) 36.0 38.0 40.0 42.0 44.0 46.0 48.0 50.0 52.0 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device vin = 4.3v il = .5a cl = 0uf ignd (ma) 3.220 3.230 3.240 3.250 3.260 3.270 3.280 3.290 3.300 3.30 3.320 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device vin = 4.3v il = 10ma cl = 0uf vout 70 75 80 85 90 95 00 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device vin = 3.2v il = .5a cl = 0f ignd (ma) figure 12. ground current vs temperature in dropout at i load =750ma figure 14. ground current vs temperature in dropout at i load =.5a 20 21 22 23 24 25 26 27 28 29 30 -40 -20 0 2 0 4 0 6 0 8 0 100 120 temperature ( o c) 3.3v device vin = 3.2v il = 750m a cl = 10f ignd (ma)
6 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation figure 15. dropout voltage vs temperature at i load =750ma figure 17. enable current vs temperature at figure 18. enable threshold vs temperature v en =6 v typical performance characteristics 50 170 90 20 230 250 270 290 30 330 350 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device il = 750m a cl = 0uf vdropout (mv) 320 340 360 380 400 420 440 460 480 500 -40 -20 0 2 0 4 0 6 0 8 0 00 20 temperature ( o c) 3.3v device il = 750ma cl = 0uf vdropout (mv) figure 16. dropout voltage vs temperature at i load =.5a 0 5 1 0 1 5 2 0 2 5 3 0 3 5 - 4 0 - 2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 t e m p e r a t u r e ( o c ) i ( u a ) 3 . 3 v d e v i c e e n 1 . 0 0 1 . 1 0 1 . 2 0 1 . 3 0 1 . 4 0 1 . 5 0 1 . 6 0 1 . 7 0 1 . 8 0 1 . 9 0 2 . 0 0 - 4 0 - 2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 t e m p e r a t u r e ( o c ) v t h ( v ) 3 . 3 v d e v i c e
7 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al the SPX29150/51/52/53 incorporates pro - tection against over-current faults, reversed load insertion, over temperature operation, and positive and negative transient volt - ages. thermal considerations although the SPX29150/51/52/53 offers limiting circuitry for overload conditions, it is still necessary to insure that the maximum junction temperature is not exceeded in the application. heat will fow through the lowest resistance path, the junction-to-case path. in order to insure the best thermal fow of the component, proper mounting is required. consult the heatsink manufacturer for ther - mal resistance and heat sink design. to-220 design example: assume that v in = 10v, v out = 5v, i out = 1.5a, t a = 50c, h = 1c/w, ch = 2c/w, and jc = 3c/w, where: t a = ambient temperature, ha = heatsink to ambient thermal resis - tance ch = case to heatsink thermal resistance jc = junction to case thermal resistance the power calculated under these condi - tions is: p d = (v in C v out ) * i out = 7.5w. and the junction temperature is calculated as t j = t a + p d * ( ha + ch + jc ) or s p x 2 9 1 5 0 v o u t v i n 6 . 8 f + + 1 0 f figure 19. fixed output linear regulator figure 20. adjustable output linear regulator t j = 50 + 7.5 * (1+2+3) = 95c reliable operation is insured. capacitor requirements the output capacitor is needed to insure stability and minimize the output noise. the value of the capacitor varies with the load. however, a minimum value of 10f alumi - num capacitor will guarantee stability over all load conditions. a tantalum capacitor is rec - ommended if a faster load transient response is needed. if the power source has a high ac impedance, a 0.1f ceramic capacitor between input & ground is recommended. the output capacitors maximum esr value for stable operation is 0.33ohms. minimum load current to ensure proper behavior of the regulator under light loads, a minimum load of 5ma for SPX29150/51/52/53 is required. typical application circuits figure 19 represents a typical fxed output regulator. figure 20 represents an adjustable output regulator. the values of r1 and r2 set the output voltage value as follows: v out =v ref * [1 + (r1/r2)]. a minimum value of 10k is recommended for r2 with a range between 10k and 47k. application information spx29152 v out v in gnd adj 1 2 3 4 5 r1 r2 6. 8 f + + 10 f
8 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation p ackage pinouts *tab is internally connected to gnd t o - 2 6 3 - 3 p a c k a g e ( t ) v o u t g n d v i n f r o n t v i e w 1 2 3 o u t p u t t o - 2 6 3 - 5 p a c k a g e ( t 5 ) t o p v i e w 4 5 3 2 1 g n d f l a g 1 ) 3 ) 4 ) 5 ) 2 ) i n p u t e n a b l e g n d a d j u s t 1 ) 3 ) 4 ) 5 ) 2 ) i n p u t e n a b l e g n d a d j u s t 1 ) 3 ) 4 ) 5 ) 2 ) i n p u t f l a g o u t p u t o u t p u t s p x 2 9 1 5 1 s p x 2 9 1 5 2 s p x 2 9 1 5 3 f r o n t v i e w t o - 2 2 0 - 3 p a c k a g e ( u ) v i n v o u t g n d t o - 2 2 0 - 5 p a c k a g e ( u 5 ) t o p v i e w 1 2 3 4 5 o u t p u t g n d f l a g 1 ) 3 ) 4 ) 5 ) 2 ) i n p u t e n a b l e o u t p u t g n d a d j u s t 1 ) 3 ) 4 ) 5 ) 2 ) i n p u t e n a b l e o u t p u t g n d a d j u s t 1 ) 3 ) 4 ) 5 ) 2 ) i n p u t f l a g s p x 2 9 1 5 1 s p x 2 9 1 5 2 s p x 2 9 1 5 3 3 2 1
9 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al p ackage: 3 pin to-263 min nom max min nom max a 0.60 - 0.90 4.06 - 4.83 a 0.000 - 0.00 0.00 - 0.25 b 0.020 - 0.039 0.5 - 0.99 b2 0.045 - 0.070 1.14 - 1.78 c 0.05 - 0.029 0.38 - 0.74 c2 0.045 - 0.065 1.14 - .65 d 0.330 - 0.380 8.38 - 9.65 d 0.270 - - 6.86 - - e 0.380 - 0.420 9.65 - 10.67 e 0.245 - - 6.22 - - e h 0.575 - 0.625 14.61 - 5.88 l 0.070 - 0.0 1.78 - 2.79 l - - 0.066 - - .68 l3 o 0? - 8? 0? - 8? inches controlling dimension millimeters conversion factor: 1 inch = 25.40 mm sipex pkg signoff date/rev: jl aug5-05 / rev a 0.25 bsc .010 bsc symbol 3 pin to-263 jedec to-263 variation aa 2.54 bsc .100 bsc detail c l gauge plane a seating plane l3 c c2 a h seating plane chamfer optional side view see detail c e d (l1) thermal pad back view l front view e d b2 e b e/2 2 3
0 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation p ackage: 5 pin to-263 (l1) e d thermal pad back view e d l e b 2 3 e/2 front view 4 5 detail c l gauge plane a seating plane l3 c c2 a h seating plane see detail c chamfer optional side view symbol min nom max min nom max a 0.60 - 0.90 4.06 - 4.83 a 0.000 - 0.00 0.00 - 0.25 b 0.020 - 0.039 0.5 - 0.99 c 0.05 - 0.029 0.38 - 0.74 c2 0.045 - 0.065 1.14 - .65 d 0.330 - 0.380 8.38 - 9.65 d 0.270 - - 6.86 - - e 0.380 - 0.420 9.65 - 10.67 e 0.245 - - 6.22 - - e h 0.575 - 0.625 14.61 - 5.88 l 0.070 - 0.0 1.78 - 2.79 l - - 0.066 - - .68 l3 o 0? - 8? 0? - 8? sipex pkg signoff date/rev: jl jun12-06 / rev b .067 bsc .010 bsc 1.702 bsc 0.254 bsc 5 pin to-263 jedec to-263 variation ba dimensions in inches: controlling dimension dimensions in millimeters conversion factor: 1 inch = 25.40 mm
rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al p ackage: 3 pin to-220
2 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation p ackage: 5 pin to-220
3 rev a 8/ 5/06 sp2950/5/52/53 .5a low dropout v oltage regulator ? copyright 2006 sipex corporation for sipex a pprov al analog excellence sipex corporation reserves the right to make changes to any products described herein. sipex does not assume any liability arising out of the applica - tion or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. powerpc is a registered trademark of ibm. sipex corporation headquarters and sales offce 233 south hillview drive milpitas, ca 95035 tel: (408) 934-7500 fax: (408) 935-7600 part number accuracy output voltage package SPX29150u-1-8 1.0% 1.8v 3 lead to-220 SPX29150u-2-5 1.0% 2.5v 3 lead to-220 SPX29150u-3-3 1.0% 3.3v 3 lead to-220 SPX29150u-5-0 1.0% 5.0v 3 lead to-220 SPX29150t-1-8 1.0% 1.8v 3 lead to-263 SPX29150t-1-8/tr 1.0% 1.8v 3 lead to-263 SPX29150t-2-5 1.0% 2.5v 3 lead to-263 SPX29150t-2-5/tr 1.0% 2.5v 3 lead to-263 SPX29150t-3-3 1.0% 3.3v 3 lead to-263 SPX29150t-3-3/tr 1.0% 3.3v 3 lead to-263 SPX29150t-5-0 1.0% 5.0v 3 lead to-263 SPX29150t-5-0/tr 1.0% 5.0v 3 lead to-263 spx29151u5-1-8 1.0% 1.8v 5 lead to-220 spx29151u5-2-5 1.0% 2.5v 5 lead to-220 spx29151u5-3-3 1.0% 3.3v 5 lead to-220 spx29151u5-5-0 1.0% 5.0v 5 lead to-220 spx29151t5-1-8 1.0% 1.8v 5 lead to-263 spx29151t5-1-8/tr 1.0% 1.8v 5 lead to-263 spx29151t5-2-5 1.0% 2.5v 5 lead to-263 spx29151t5-2-5/tr 1.0% 2.5v 5 lead to-263 spx29151t5-3-3 1.0% 3.3v 5 lead to-263 spx29151t5-3-3/tr 1.0% 3.3v 5 lead to-263 spx29151t5-5-0 1.0% 5.0v 5 lead to-263 spx29151t5-5-0/tr 1.0% 5.0v 5 lead to-263 spx29152t5 1.0% adj 5 lead to-263 spx29152t5/tr 1.0% adj 5 lead to-263 spx29152u5 1.0% adj 5 lead to-220 spx29153t5 1.0% adj 5 lead to-263 spx29153t5/tr 1.0% adj 5 lead to-263 spx29153u5 1.0% adj 5 lead to-220 ordering information available in lead free packaging. to order add -l suffx to part number. example: spx29153t5/tr = standard; spx29153t5-l/tr = lead free

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